Works on kernel 7.0.0-38 / Ubuntu 24.04 HWE, TU106 CMP 40HX, X99!

[jyeh2]

Confirming cmpunlocker works on the Ubuntu 24.04 HWE kernel 7.0.0-38-generic.

Setup

• ASUS CMP 40HX (TU106, 10de:1f0b)
• Huananzhi X99-BD4 (Haswell-EP root port), ReBAR + Above 4G enabled
• Kernel 7.0.0-38-generic, gcc 13.3
• Patched open modules 610.57.04, built with KERNEL_UNAME=7.0.0-38-generic ./install.sh --no-download

Results (cold boot)

• GSP boots clean: MAILBOX1_ACCEPTED, CMP40_GSP_READY, no RmInitAdapter / MISMATCH errors
• BAR1: 8 GiB
• PCIe: 5.0 GT/s x16 (after root-port retrain, see below)
• Pinned H2D / D2H: 6.20 / 6.69 GB/s (stock was ~3.2)
• FP32 GEMM: 6.90 TFLOPS, FP16 GEMM: 54.78 TFLOPS (stock FP16 was 0.98)

Same numbers I got on 6.17.12 mainline and 5.15, so no regression on 7.0.

Notes for anyone else on 24.04

• apt install nvidia-driver-610-open pulls in 615 as dependencies, which doesn't match the module. I purged that and installed 610.57.04 userspace from the NVIDIA .run with --no-kernel-modules instead.
• The build prints hundreds of objtool: ... 'naked' return found in MITIGATION_RETHUNK build warnings. They're harmless; the module builds and loads fine.
• On X99 the driver's own Gen2 retrain still logs RETRAIN_FAIL status=1101. What works for me at every boot: driver reprobe (tools/cmp40hx-driver-reprobe-gen2.sh), then a masked root-port retrain:
  setpci -s 00:02.0 CAP_EXP+10.w=0020:0020
  (Root port BDF will differ on other boards.)